I have the current brochure, and on the back cover it states in tiny letters:
"The exclusive availability of the multiple Fastpass tickets pertain only to US and Canada through AAA Vacations for travel packages that include a stay at a Disneyland Resort hotel. The multiple Fastpass ticket ticket benefit may be available elsewhere or independent of travel package purchases. Multiple Fastpass ticket benefit is available for AAA Vacations through January 19, 2006."
Since this is such a nice perk, especially during busy periods, I would have the agent verify that you are getting the exclusive multiple Fastpass tickets that are promised through the brochure. While the fine print indicates that it may be possible to get these without booking the specific package, I think it's highly unlikely you'll get them without booking a package that incudes at least the DL, GC, or PP hotel and the passes with them. You shouldn't need to book transportation through them.